Need help interpreting results of my effect size for my research report

The effect size was calculated using Cohen's d model. Cohen's d = (1.2 - 1.25) ? 0.474241 = 0.105432.

Group Statistics Group control & Std. Error Experimental N Mean Std. Deviation Mean Posttest Quiz control 4 1.25 500 250 Answer Experimental 1.20 447 200Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of the Mean Std. Error Difference Sig. df Sig. (2-tailed) Difference Difference Lower Upper Posttest Quiz Answer Equal variances 099 762 158 .879 050 .316 -.696 796 assumed Equal variances not 156 6.173 .881 050 320 -.728 .828 assumed